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Single Row Deep Groove All Bearings

Single Row Deep Groove All Bearings

Sealed bearings - Bearings with low-friction seals

SKF deep groove ball bearings with low-friction seals, designation suffixes RSL, 2RSL or RZ, 2RZ, are manufactured in three designs depending on bearing series and size (fig)

  • bearings in the 60, 62, and 63 series up to 25 mm outside diameter are equipped with RSL seals to design (a)
  • bearings in the 60, 62, and 63 series from 25 mm and up to and including 52 mm outside diameter are equipped with RSL seals to design (b)
  • other bearings have RZ-seals (c).

The seals form an extremely narrow gap with the cylindrical surface of the inner ring shoulder or recess profile and are practically non-contacting. Because of this, bearings fitted with low-friction seals can be operated at the same high speeds as bearings with Z shields, but with improved seal performance.

The low-friction seals are made of oil and wear-resistant acrylonitrile-butadiene rubber (NBR) with a sheet steel reinforcement. The permissible operating temperature range for these seals is 40 to +100 C and up to +120 C for brief periods.

Details regarding the suitability of RSL and RZ shields for various operating conditions will be found in table 1.


Deep groove ball bearings | Single row deep groove ball bearings | Basic design bearings | Sealed bearings | Bearings with shields | Bearings with low-friction seals | Bearings with contact seals | ICOS oil sealed bearing units | Grease life | SKF Energy Efficient (E2) deep groove ball bearings | Deep groove ball bearings with filling slots | Stainless steel deep groove ball bearings | Double row deep groove ball bearings